[U-Boot] [PATCH v2 1/2] Introduce generic TPM support in u-boot

[Mike Frysinger <vapier@gentoo.org>]

On Friday 14 October 2011 23:38:50 Vadim Bendebury wrote:
> --- /dev/null
> +++ b/drivers/tpm/generic_lpc_tpm.c
>
> +#define TPM_TIMEOUT_ERR			(~0)
> +#define TPM_DRIVER_ERR		(-1)

these are the same thing.  another reason why you shouldn't mix ~ with normal 
values.  use -2 or something.

> +/* TPM access going through macros to make tracing easier. */
> +#define tpm_read(ptr) ({ \
> +	u32  __ret; \
> +	__ret = (sizeof(*ptr) == 1) ? readb(ptr) : readl(ptr); \
> +	 debug(PREFIX "Read reg 0x%x returns 0x%x\n", \
> +	       (u32)ptr - (u32)lpc_tpm_dev, __ret); \
> +					 __ret; })

that last "__ret;" is indented way too far.  it should be on the same level as 
"u32 __ret;" and such.

> +#define tpm_write(value, ptr) ({		   \
> +	u32 __v = value;	\
> +	debug(PREFIX "Write reg 0x%x with 0x%x\n", \
> +	       (u32)ptr - (u32)lpc_tpm_dev, __v); \
> +	if (sizeof(*ptr) == 1) \
> +		writeb(__v, ptr); \
> +	else \
> +		writel(__v, ptr); })

({...}) doesn't make sense here.  this should be a do{...}while(0).

> +		printf("%s:%d - failed to get 'command_ready' status\n",
> +		       __FILE__, __LINE__);

replace __FILE__/__LINE__ with __func__ here and everywhere else in the file
-mike
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